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为了研究TLA改性沥青混合料的抗热氧老化性能,模拟了现场的短期老化和长期老化;并用车辙试验、低温弯曲试验、浸水马歇尔试验、冻融劈裂试验以及单轴压缩弹性模量试验分析了TLA改性沥青混合料在不同掺量条件下的高低温性能、水稳定性能和力学性能。研究表明:TLA的添加,可以显著改善其高温稳定性、水稳定性能和抗变形能力,同时可以有效提高其抗热氧老化能力,但是会降低其低温性能。并且随着掺量的增加,其改善(降低)效果也是越来越显著的。
In order to study the thermo-oxidative aging resistance of TLA modified asphalt mixture, short-term aging and long-term aging in the field were simulated. The rutting test, low temperature bending test, immersion Marshall test, freeze-thaw splitting test and uniaxial compression modulus test The high and low temperature performance, water stability and mechanical properties of TLA modified asphalt mixture were analyzed. The results show that: TLA can significantly improve its high temperature stability, water stability and deformation resistance, while it can effectively improve its resistance to thermal aging, but will reduce its low temperature performance. And with the increase of dosage, the improvement (decrease) effect is more and more significant.